Compute Node Software

By default the compute nodes run a restricted low-overhead operating system optimized for high performance computing called "Cray Linux Environment" (CLE). This OS supports only a limited number of system calls and UNIX commands and does not system or user-created dynamic-load libraries. The compute nodes can run a more fully featured OS as well. See Running Shared and Dynamic Library applications.

A single given compute node is always allocated to run a single user job; multiple jobs never share a compute node.